Performance of Lubricant from Vegetable Oils by using Four Ball Testing Machine

Lubricants play a key role in lubrication of components of internal combustion engine and enhancing the working life of engine. Load carrying capacity of lubricating oil is important parameter for their application. In this paper, Four-Ball testing method is used to measure wear scare diameter of two different bio lubricant oil. Tests were carried out according to the standard test methods with the tribological properties of the formulated oil were evaluated by four ball tester. The rotating ball is rotated at a speed of 1,200 rpm at 75ºC for one hour. The wear scar of the fixed ball was measured using an optical microscope of 0.01 mm accuracy. The balls were cleaned by acetone and heptanes before each run. The coefficient of friction was evaluated as per ASTM D 4172 B. The rotating ball was rotated at a speed of 1200 rpm with a load of 400N at 75ºC. The wear test was conducted as per ASTM D4172B with a rotating speed of 1,200 rpm and a load of 400 N at 75ºC. so we recognition to final sample oil to conformed from results.